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- W4287778969 abstract "This paper considers low-density parity-check (LDPC) decoders affected by deviations introduced by the electronic device on which the decoder is implemented. Noisy density evolution (DE) that allows to theoretically study the performance of these LDPC decoders can only consider symmetric deviation models due to the all-zero codeword assumption. A novel DE method is proposed that admits the use of asymmetric deviation models, thus widening the range of faulty implementations that can be analyzed. DE equations are provided for three noisy decoders: belief propagation, Gallager B, and quantized min-sum (MS). Simulation results confirm that the proposed DE accurately predicts the performance of LDPC decoders with asymmetric deviations. Furthermore, asymmetric versions of the Gallager B and MS decoders are proposed to compensate the effect of asymmetric deviations. The parameters of these decoders are then optimized using the proposed DE, leading to better ensemble thresholds and improved finite-length performance in the presence of asymmetric deviations." @default.
- W4287778969 created "2022-07-26" @default.
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- W4287778969 date "2020-05-12" @default.
- W4287778969 modified "2023-09-29" @default.
- W4287778969 title "Noisy Density Evolution With Asymmetric Deviation Models" @default.
- W4287778969 doi "https://doi.org/10.48550/arxiv.2005.05788" @default.
- W4287778969 hasPublicationYear "2020" @default.
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